Now, the question of the hour is what exactly is LI FI? LI-FI is a short hand representation for Light Fidelity. Fidelity as per a dictionary is being faithful. As per its name, it can be safely said that this technology functions on light. In simple terms, it is a possible alternate to Wi-Fi. While Wi-Fi uses radio signals wirelessly, LI-FI is the concept of using visible Light Spectrum.
Getting into details, LI-FI works with the LED lights that are turned into wireless transmitters. To receive data from these lights, we need a dongle of sorts, that acts like a modem. This dongle can be connected to a laptop or a tablet. They can be connected to the tablets or laptops through USB Ports. There is a sensor in the modem that catches the light coming down, and then an infrared component that sends the signal back to the light source.